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Earliest handheld / battery calculator with hyperbolics?
05-09-2018, 01:58 PM
Post: #7
Steve Simpkin Offline
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RE: Earliest handheld / battery calculator with hyperbolics?
(05-09-2018 01:43 PM)Gerald H Wrote:  Wrong - 27S has COSH, SINH & TANH & arc functions.

The HP-27S (introduced in 1988) does but the HP-27 (introduced in 1976) does not. Two very different calculators.
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RE: Earliest handheld / battery calculator with hyperbolics? - Steve Simpkin - 05-09-2018 01:58 PM



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